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https://cleantechnica.com/2026/01/23/catl-begins-commercial-production-of-sodium-ion-batteries/

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This week, CATL, the largest battery manufacturer in the world, announced it has started producing sodium-ion battery packs for light commercial vehicles that can be plugged in and charged in extreme cold conditions down to -30°C (-22°F). Even at -40°C, the battery retains 90% of its usable capacity, CATL claims.

The company calls its new battery platform for commercial vehicles Techtrans II, and it includes batteries for heavy-duty trucks and buses. Now the industry’s first mass produced sodium battery for light commercial vehicles has been added to the mix. The sodium battery pack has a capacity of 45 kWh and is intended for small vans and trucks. Obviously, long range is not the highest priority for the new battery chemistry.

Tectrans II has several variations, some of which utilize lithium-ion technology. One features an ultra-fast charging variant capable of charging from 20 to 80 percent in 30 minutes at -15°C. Another is a high temperature ultra-fast charging version that adds 60 percent range in 18 minutes with a cell life of 5,000 cycles at 45°C. The series also offers a long-range version with a battery pack capacity of up to 253 kWh, delivering 800 kilometers of range. The new sodium-ion battery is said to have a lifespan of over 10,000 charge cycles and is certified under the new Chinese national standard GB 38031-2025.

In addition, CATL is also introducing swappable battery packs as part of the Techtrans series. In addition to the #20 battery swap block with 42 kWh capacity, there is the #25 block with 56 kWh, and the #35 block with 81 kWh. In 2026, sodium batteries will see large-scale adoption in battery swapping, passenger vehicles, commercial vehicles, and energy storage, CATL said at a supplier conference held in its headquarters in Ningde on December 28. According to multiple Chinese news sources, sodium-ion batteries and lithium-ion batteries are expected to be part 0f a new “dual-star” trend at CATL.

In April of 2025, CATL introduced its first sodium-ion battery called Naxtra at its Tech Day and has since been marketing it for use in passenger cars with an energy density of up to 175 Wh/kg. Notably, the same energy density is now specified for the Tectrans II sodium battery.